Geman



G. F. A. BRUEGGEII/IAN.

DOOR.

APPLICATION FILED' APR. 22. 1918.

)Patent-ed Auf. 5, 1919.

maf/MW y GEORGIE F. A. BRUEGGEMAN, 0F ST. LOUIS, MISSOURI.

' DUUR.

Application filed April 22. 1918.

To all whom t may concern.'

Be 1t known that l, Grenen F. Blume.a GEMAN, a citizen of the United States, residing at city of Slt. Louis, State of Missouri,

have invented a certain new and useful lmprovenient in Doors, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains vto make and use the same, reference being had to the accompanying drawings, forming part of this specifi cation, in which,-

lfigure l is a side elevational view of myr improved door.

Fig. 2 is a horizontal sectional view of the same.

Fig. llig. l.

l? ig. l is a detail view.

rlFhis invention relates to a new and use- 3 is a detailview on line 3-3 of ful improvement in doors or inclosures hav-` available space when opened and withoutv interfering with surrounding objects.

The door as an entirety is made up of panels which may be of wood, glass 'or lireproof material, designed to slide over each l other to form a solid wall when the door is closed, said panels being operated by suit` ably arranged counter-balanced arms, so interconnected that the door, or the panels thereof, can readily be locked either in open or closed position.

ln the drawings, 1 indicates the casing or wall of the building from which-extend posts 2 arranged one above the other and which posts are preferably squared or noncircular in cross section and on which are arranged arms 3 designed to be operated in unison, said arms being spaced apart by washers 4. These posts 2 are pivotally arranged in the door casing and constitute the pivotal support for the arms 3 which are mounted thereon and .rotatable therewith. 'lhese arms are of different lengths and are pivotally connected at their outer ends to panels or door sections 5, the shortest pair of arms being connected to the door panel nearest the posts 2, while the longest pair of arms are connected to the outermost door panel. These door panels 5 are preferably provided with overlapplng Hangcs 5a which,

Specification of Letters Patent.

Serial No. 230,093.

when the door actsas a closure, are in close proximlty to .each other so as to practically provide a solid wall. Each panel as shownl is Z-shape rin cross Isection and when thel door is open the overlappingfllanges 5a may serve as stops, as the weight of the open door will bring them into close contact with each other. By this construction',- space is also provided for the movement of arms 3 connected to the intermediate panels and consequently when the door is closed the panels and arms will be nested close together.

6 indicates a connecting rod pivotally attached to a pair of arms and carrying a locking bar 7 whose extremity may engage a keeper in the wall or lintel to lock the door in its opened or closed position.

8 indicates a connecting rod preferably mounted on the uppermost post 2 and pivot- "ally connected to the point of connection of the lowermos't longest arm 3, to the outermost panel. This rod 8 is made up of two parts pivotally connected together and when the door is fully distended serves to prevent the .same from sagging and in this manner rel lieving the flanges 5a from the strain of supporting the panels in position.`

9 is a counter-balancing weight arranged on the cord or cable 10 passing over an idle pulley 11 and connected to the upper end of the outermost panel 5. l

The operation of the door is very simple. When the joint in connecting rod 8 is broken and the bolt 7 retracted, the panel-s of the door may be moved upwardly and folded into a receiving pocket at one side of the casing, as shown by dotted lines in Fig. 1, the counterbalancing weight assisting in lifting the panels. The arms 3 are designed to` move in unison and consequently the panels are caused to maintain parallelism in their movement to and from their opened and closed position.

I claim:

1. A door composed of a plurality of sets of supporting arms, the arms of each set being spaced apart, said arms being of different lengths, and panels pivotally connected to the outer ends of said arms, intermediate panels having flanges at their outer edges lyingin the plane of movement of said arms, in combination with means for supporting said door.

Patentedaugt, laid..

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2. A door composed of a plurality of sets of supporting arms, the arms of eachset being spaced apart, said arms being differenit lengths, panels pivotally connected to the outer ends of said arms, intermediate panels having flanges at their outer edges lying in the plane of movement of said arms, and said intermediate panels also having anges at their inner edges Which overlap said outer flanges and l-ie in the plane of` to be pivotally mounted on the door easingand pivotally connected to the outermost panel, and means for operating said door.

4. A door Composed of a plurality of sets of arms pivotally mounted on a door easing, the arms of each set being spaced apart and of different lengths, panels pivotally supported by the outer ends of said amis, the

intermediate panels being designed to move 1n the spaces between the outside arms, and

'a look for locking said `panels in their opened and closed positions.

In testimony whereof I hereunto aliix my signature in the presence of two witnesses, this 17th day of April, 1918.

GEORGE F. A. BRUEGGEMAN.

Witnesses;

M. P. SMITH, M. A. HORDEL. 

